package com.jdy.haoduoaiteacher.view.calendar;

/**
 * Created by Administrator on 2016/1/16 0016.
 */
public class CalendarUtil {
  private int gregorianYear;
  private int gregorianMonth;
  private int gregorianDate;
  private boolean isGregorianLeap;
  private int dayOfYear;
  private int dayOfWeek; // 周日一星期的第一天
  private int chineseYear;
  private int chineseMonth; // 负数表示闰月
  private int chineseDate;
  private int sectionalTerm;
  private int principleTerm;
  private static char[] daysInGregorianMonth = { 31, 28, 31, 30, 31, 30, 31,
      31, 30, 31, 30, 31 };
  private static String[] stemNames = { "甲", "乙", "丙", "丁", "戊", "己", "庚", "辛",
      "壬", "癸" };
  private static String[] branchNames = { "子", "丑", "寅", "卯", "辰", "巳", "午",
      "未", "申", "酉", "戌", "亥" };
  private static String[] animalNames = { "鼠", "牛", "虎", "兔", "龙", "蛇", "马",
      "羊", "猴", "鸡", "狗", "猪" };

  public static final String[] daysOfMonth = { "1", "2", "3", "4", "5", "6",
      "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18",
      "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30",
      "31" };

  private String monthOfAlmanac[] = { "正月", "二月", "三月", "四月", "五月", "六月", "七月",
      "八月", "九月", "十月", "冬月", "腊月" };
  private String daysOfAlmanac[] = { "初一", "初二", "初三", "初四", "初五", "初六", "初七",
      "初八", "初九", "初十", "十一", "十二", "十三", "十四", "十五", "十六", "十七", "十八", "十九",
      "二十", "廿一", "廿二", "廿三", "廿四", "廿五", "廿六", "廿七", "廿八", "廿九", "三十" }; // 农历的天数

  public CalendarUtil() {
    setGregorian(1901, 1, 1);
  }

  /**
   * 得到对应天的农历 要判断闰月 月初 月末 *
   * 
   * @param y
   * @param m
   * @param d
   * @return String
   */
  public String getChineseDay(int y, int m, int d) {

    CalendarUtil c = new CalendarUtil();

    c.setGregorian(y, m, d);
    c.computeChineseFields();
    c.computeSolarTerms();

    int cd = c.getChineseDate();

    return daysOfAlmanac[cd - 1];
  }

  /**
   * 得到对应天的农历 要判断闰月 月初 月末
   * 
   * @param y
   * @param m
   * @param d
   * @return
   */
  public String getChineseMonth(int y, int m, int d) {
    setGregorian(y, m, d);
    computeChineseFields();
    computeSolarTerms();

    int cd = getChineseMonth();
    if (cd < 1 || cd > 29)
      cd = 1;
    return monthOfAlmanac[cd - 1];
  }

  public void setGregorian(int y, int m, int d) {
    gregorianYear = y;
    gregorianMonth = m;
    gregorianDate = d;
    isGregorianLeap = isGregorianLeapYear(y);
    dayOfYear = dayOfYear(y, m, d);
    dayOfWeek = dayOfWeek(y, m, d);
    chineseYear = 0;
    chineseMonth = 0;
    chineseDate = 0;
    sectionalTerm = 0;
    principleTerm = 0;
  }

  // 判断是否是闰年
  public static boolean isGregorianLeapYear(int year) {
    boolean isLeap = false;
    if (year % 4 == 0)
      isLeap = true;
    if (year % 100 == 0)
      isLeap = false;
    if (year % 400 == 0)
      isLeap = true;
    return isLeap;
  }

  // 返回一个月有几天
  public static int daysInGregorianMonth(int y, int m) {
    int d = daysInGregorianMonth[m - 1];
    if (m == 2 && isGregorianLeapYear(y))
      d++; // 公历闰年二月多一天
    return d;
  }

  // 计算当前天在本年中是第几天
  public static int dayOfYear(int y, int m, int d) {
    int c = 0;
    for (int i = 1; i < m; i++) {
      c = c + daysInGregorianMonth(y, i);
    }
    c = c + d;
    return c;
  }

  // 当前天是本周的第几天 ， 从星期天开始算
  public static int dayOfWeek(int y, int m, int d) {
    int w = 1; // 公历一年一月一日是星期一，所以起始值为星期日
    y = (y - 1) % 400 + 1; // 公历星期值分部 400 年循环一次
    int ly = (y - 1) / 4; // 闰年次数
    ly = ly - (y - 1) / 100;
    ly = ly + (y - 1) / 400;
    int ry = y - 1 - ly; // 常年次数
    w = w + ry; // 常年星期值增一
    w = w + 2 * ly; // 闰年星期值增二
    w = w + dayOfYear(y, m, d);
    w = (w - 1) % 7 + 1;
    return w;
  }

  // 农历月份大小压缩表，两个字节表示一年。两个字节共十六个二进制位数，
  // 前四个位数表示闰月月份，后十二个位数表示十二个农历月份的大小。
  private static char[] chineseMonths = { 0x00, 0x04, 0xad, 0x08, 0x5a, 0x01,
      0xd5, 0x54, 0xb4, 0x09, 0x64, 0x05, 0x59, 0x45, 0x95, 0x0a, 0xa6, 0x04,
      0x55, 0x24, 0xad, 0x08, 0x5a, 0x62, 0xda, 0x04, 0xb4, 0x05, 0xb4, 0x55,
      0x52, 0x0d, 0x94, 0x0a, 0x4a, 0x2a, 0x56, 0x02, 0x6d, 0x71, 0x6d, 0x01,
      0xda, 0x02, 0xd2, 0x52, 0xa9, 0x05, 0x49, 0x0d, 0x2a, 0x45, 0x2b, 0x09,
      0x56, 0x01, 0xb5, 0x20, 0x6d, 0x01, 0x59, 0x69, 0xd4, 0x0a, 0xa8, 0x05,
      0xa9, 0x56, 0xa5, 0x04, 0x2b, 0x09, 0x9e, 0x38, 0xb6, 0x08, 0xec, 0x74,
      0x6c, 0x05, 0xd4, 0x0a, 0xe4, 0x6a, 0x52, 0x05, 0x95, 0x0a, 0x5a, 0x42,
      0x5b, 0x04, 0xb6, 0x04, 0xb4, 0x22, 0x6a, 0x05, 0x52, 0x75, 0xc9, 0x0a,
      0x52, 0x05, 0x35, 0x55, 0x4d, 0x0a, 0x5a, 0x02, 0x5d, 0x31, 0xb5, 0x02,
      0x6a, 0x8a, 0x68, 0x05, 0xa9, 0x0a, 0x8a, 0x6a, 0x2a, 0x05, 0x2d, 0x09,
      0xaa, 0x48, 0x5a, 0x01, 0xb5, 0x09, 0xb0, 0x39, 0x64, 0x05, 0x25, 0x75,
      0x95, 0x0a, 0x96, 0x04, 0x4d, 0x54, 0xad, 0x04, 0xda, 0x04, 0xd4, 0x44,
      0xb4, 0x05, 0x54, 0x85, 0x52, 0x0d, 0x92, 0x0a, 0x56, 0x6a, 0x56, 0x02,
      0x6d, 0x02, 0x6a, 0x41, 0xda, 0x02, 0xb2, 0xa1, 0xa9, 0x05, 0x49, 0x0d,
      0x0a, 0x6d, 0x2a, 0x09, 0x56, 0x01, 0xad, 0x50, 0x6d, 0x01, 0xd9, 0x02,
      0xd1, 0x3a, 0xa8, 0x05, 0x29, 0x85, 0xa5, 0x0c, 0x2a, 0x09, 0x96, 0x54,
      0xb6, 0x08, 0x6c, 0x09, 0x64, 0x45, 0xd4, 0x0a, 0xa4, 0x05, 0x51, 0x25,
      0x95, 0x0a, 0x2a, 0x72, 0x5b, 0x04, 0xb6, 0x04, 0xac, 0x52, 0x6a, 0x05,
      0xd2, 0x0a, 0xa2, 0x4a, 0x4a, 0x05, 0x55, 0x94, 0x2d, 0x0a, 0x5a, 0x02,
      0x75, 0x61, 0xb5, 0x02, 0x6a, 0x03, 0x61, 0x45, 0xa9, 0x0a, 0x4a, 0x05,
      0x25, 0x25, 0x2d, 0x09, 0x9a, 0x68, 0xda, 0x08, 0xb4, 0x09, 0xa8, 0x59,
      0x54, 0x03, 0xa5, 0x0a, 0x91, 0x3a, 0x96, 0x04, 0xad, 0xb0, 0xad, 0x04,
      0xda, 0x04, 0xf4, 0x62, 0xb4, 0x05, 0x54, 0x0b, 0x44, 0x5d, 0x52, 0x0a,
      0x95, 0x04, 0x55, 0x22, 0x6d, 0x02, 0x5a, 0x71, 0xda, 0x02, 0xaa, 0x05,
      0xb2, 0x55, 0x49, 0x0b, 0x4a, 0x0a, 0x2d, 0x39, 0x36, 0x01, 0x6d, 0x80,
      0x6d, 0x01, 0xd9, 0x02, 0xe9, 0x6a, 0xa8, 0x05, 0x29, 0x0b, 0x9a, 0x4c,
      0xaa, 0x08, 0xb6, 0x08, 0xb4, 0x38, 0x6c, 0x09, 0x54, 0x75, 0xd4, 0x0a,
      0xa4, 0x05, 0x45, 0x55, 0x95, 0x0a, 0x9a, 0x04, 0x55, 0x44, 0xb5, 0x04,
      0x6a, 0x82, 0x6a, 0x05, 0xd2, 0x0a, 0x92, 0x6a, 0x4a, 0x05, 0x55, 0x0a,
      0x2a, 0x4a, 0x5a, 0x02, 0xb5, 0x02, 0xb2, 0x31, 0x69, 0x03, 0x31, 0x73,
      0xa9, 0x0a, 0x4a, 0x05, 0x2d, 0x55, 0x2d, 0x09, 0x5a, 0x01, 0xd5, 0x48,
      0xb4, 0x09, 0x68, 0x89, 0x54, 0x0b, 0xa4, 0x0a, 0xa5, 0x6a, 0x95, 0x04,
      0xad, 0x08, 0x6a, 0x44, 0xda, 0x04, 0x74, 0x05, 0xb0, 0x25, 0x54, 0x03 };

  // 初始日，公历农历对应日期：
  // 公历 1901 年 1 月 1 日，对应农历 4598 年 11 月 11 日
  private static int baseYear = 1901;
  private static int baseMonth = 1;
  private static int baseDate = 1;
  private static int baseIndex = 0;
  private static int baseChineseYear = 4598 - 1;
  private static int baseChineseMonth = 11;
  private static int baseChineseDate = 11;

  public int computeChineseFields() {
    if (gregorianYear < 1901 || gregorianYear > 2100)
      return 1;
    int startYear = baseYear;
    int startMonth = baseMonth;
    int startDate = baseDate;
    chineseYear = baseChineseYear;
    chineseMonth = baseChineseMonth;
    chineseDate = baseChineseDate;
    // 第二个对应日，用以提高计算效率
    // 公历 2000 年 1 月 1 日，对应农历 4697 年 11 月 25 日
    if (gregorianYear >= 2000) {
      startYear = baseYear + 99;
      startMonth = 1;
      startDate = 1;
      chineseYear = baseChineseYear + 99;
      chineseMonth = 11;
      chineseDate = 25;
    }
    int daysDiff = 0;
    for (int i = startYear; i < gregorianYear; i++) {
      daysDiff += 365;
      if (isGregorianLeapYear(i))
        daysDiff += 1; // leap year
    }
    for (int i = startMonth; i < gregorianMonth; i++) {
      daysDiff += daysInGregorianMonth(gregorianYear, i);
    }
    daysDiff += gregorianDate - startDate;

    chineseDate += daysDiff;
    int lastDate = daysInChineseMonth(chineseYear, chineseMonth);
    int nextMonth = nextChineseMonth(chineseYear, chineseMonth);
    while (chineseDate > lastDate) {
      if (Math.abs(nextMonth) < Math.abs(chineseMonth))
        chineseYear++;
      chineseMonth = nextMonth;
      chineseDate -= lastDate;
      lastDate = daysInChineseMonth(chineseYear, chineseMonth);
      nextMonth = nextChineseMonth(chineseYear, chineseMonth);
    }
    return 0;
  }

  private static int[] bigLeapMonthYears = {
      // 大闰月的闰年年份
      6, 14, 19, 25, 33, 36, 38, 41, 44, 52, 55, 79, 117, 136, 147, 150, 155,
      158, 185, 193 };

  public static int daysInChineseMonth(int y, int m) {
    // 注意：闰月 m < 0
    int index = y - baseChineseYear + baseIndex;
    int v = 0;
    int l = 0;
    int d = 30;
    if (1 <= m && m <= 8) {
      v = chineseMonths[2 * index];
      l = m - 1;
      if (((v >> l) & 0x01) == 1)
        d = 29;
    } else if (9 <= m && m <= 12) {
      v = chineseMonths[2 * index + 1];
      l = m - 9;
      if (((v >> l) & 0x01) == 1)
        d = 29;
    } else {
      v = chineseMonths[2 * index + 1];
      v = (v >> 4) & 0x0F;
      if (v != Math.abs(m)) {
        d = 0;
      } else {
        d = 29;
        for (int i = 0; i < bigLeapMonthYears.length; i++) {
          if (bigLeapMonthYears[i] == index) {
            d = 30;
            break;
          }
        }
      }
    }
    return d;
  }

  public static int nextChineseMonth(int y, int m) {
    int n = Math.abs(m) + 1;
    if (m > 0) {
      int index = y - baseChineseYear + baseIndex;
      int v = chineseMonths[2 * index + 1];
      v = (v >> 4) & 0x0F;
      if (v == m)
        n = -m;
    }
    if (n == 13)
      n = 1;
    return n;
  }

  private static char[][] sectionalTermMap = {
      { 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 5, 5, 5, 5,
          5, 4, 5, 5 },
      { 5, 4, 5, 5, 5, 4, 4, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4, 4, 4, 3, 3, 4,
          4, 3, 3, 3 },
      { 6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5,
          4, 5, 5, 5, 5 },
      { 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5, 4, 5, 5, 5, 4, 4, 5, 5, 4, 4, 4, 5,
          4, 4, 4, 4, 5 },
      { 6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6, 5, 5, 5, 5,
          4, 5, 5, 5, 5 },
      { 6, 6, 7, 7, 6, 6, 6, 7, 6, 6, 6, 6, 5, 6, 6, 6, 5, 5, 6, 6, 5, 5, 5, 6,
          5, 5, 5, 5, 4, 5, 5, 5, 5 },
      { 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7,
          6, 6, 6, 7, 7 },
      { 8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7,
          6, 7, 7, 7, 6, 6, 7, 7, 7 },
      { 8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7,
          6, 7, 7, 7, 7 },
      { 9, 9, 9, 9, 8, 9, 9, 9, 8, 8, 9, 9, 8, 8, 8, 9, 8, 8, 8, 8, 7, 8, 8, 8,
          7, 7, 8, 8, 8 },
      { 8, 8, 8, 8, 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7,
          6, 6, 7, 7, 7 },
      { 7, 8, 8, 8, 7, 7, 8, 8, 7, 7, 7, 8, 7, 7, 7, 7, 6, 7, 7, 7, 6, 6, 7, 7,
          6, 6, 6, 7, 7 } };
  private static char[][] sectionalTermYear = {
      { 13, 49, 85, 117, 149, 185, 201, 250, 250 },
      { 13, 45, 81, 117, 149, 185, 201, 250, 250 },
      { 13, 48, 84, 112, 148, 184, 200, 201, 250 },
      { 13, 45, 76, 108, 140, 172, 200, 201, 250 },
      { 13, 44, 72, 104, 132, 168, 200, 201, 250 },
      { 5, 33, 68, 96, 124, 152, 188, 200, 201 },
      { 29, 57, 85, 120, 148, 176, 200, 201, 250 },
      { 13, 48, 76, 104, 132, 168, 196, 200, 201 },
      { 25, 60, 88, 120, 148, 184, 200, 201, 250 },
      { 16, 44, 76, 108, 144, 172, 200, 201, 250 },
      { 28, 60, 92, 124, 160, 192, 200, 201, 250 },
      { 17, 53, 85, 124, 156, 188, 200, 201, 250 } };
  private static char[][] principleTermMap = {
      { 21, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 20, 20,
          20, 20, 20, 19, 20, 20, 20, 19, 19, 20 },
      { 20, 19, 19, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 18, 19, 19, 19, 18,
          18, 19, 19, 18, 18, 18, 18, 18, 18, 18 },
      { 21, 21, 21, 22, 21, 21, 21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 20, 20,
          20, 21, 20, 20, 20, 20, 19, 20, 20, 20, 20 },
      { 20, 21, 21, 21, 20, 20, 21, 21, 20, 20, 20, 21, 20, 20, 20, 20, 19, 20,
          20, 20, 19, 19, 20, 20, 19, 19, 19, 20, 20 },
      { 21, 22, 22, 22, 21, 21, 22, 22, 21, 21, 21, 22, 21, 21, 21, 21, 20, 21,
          21, 21, 20, 20, 21, 21, 20, 20, 20, 21, 21 },
      { 22, 22, 22, 22, 21, 22, 22, 22, 21, 21, 22, 22, 21, 21, 21, 22, 21, 21,
          21, 21, 20, 21, 21, 21, 20, 20, 21, 21, 21 },
      { 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23, 23, 23, 22, 22,
          23, 23, 22, 22, 22, 23, 22, 22, 22, 22, 23 },
      { 23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23,
          23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 23 },
      { 23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23, 23, 23, 22, 23,
          23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 23 },
      { 24, 24, 24, 24, 23, 24, 24, 24, 23, 23, 24, 24, 23, 23, 23, 24, 23, 23,
          23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 23 },
      { 23, 23, 23, 23, 22, 23, 23, 23, 22, 22, 23, 23, 22, 22, 22, 23, 22, 22,
          22, 22, 21, 22, 22, 22, 21, 21, 22, 22, 22 },
      { 22, 22, 23, 23, 22, 22, 22, 23, 22, 22, 22, 22, 21, 22, 22, 22, 21, 21,
          22, 22, 21, 21, 21, 22, 21, 21, 21, 21, 22 } };
  private static char[][] principleTermYear = {
      { 13, 45, 81, 113, 149, 185, 201 }, { 21, 57, 93, 125, 161, 193, 201 },
      { 21, 56, 88, 120, 152, 188, 200, 201 },
      { 21, 49, 81, 116, 144, 176, 200, 201 },
      { 17, 49, 77, 112, 140, 168, 200, 201 },
      { 28, 60, 88, 116, 148, 180, 200, 201 },
      { 25, 53, 84, 112, 144, 172, 200, 201 },
      { 29, 57, 89, 120, 148, 180, 200, 201 },
      { 17, 45, 73, 108, 140, 168, 200, 201 },
      { 28, 60, 92, 124, 160, 192, 200, 201 },
      { 16, 44, 80, 112, 148, 180, 200, 201 },
      { 17, 53, 88, 120, 156, 188, 200, 201 } };

  public int computeSolarTerms() {
    if (gregorianYear < 1901 || gregorianYear > 2100)
      return 1;
    sectionalTerm = sectionalTerm(gregorianYear, gregorianMonth);
    principleTerm = principleTerm(gregorianYear, gregorianMonth);
    return 0;
  }

  public static int sectionalTerm(int y, int m) {
    if (y < 1901 || y > 2100)
      return 0;
    int index = 0;
    int ry = y - baseYear + 1;
    while (ry >= sectionalTermYear[m - 1][index])
      index++;
    int term = sectionalTermMap[m - 1][4 * index + ry % 4];
    if ((ry == 121) && (m == 4))
      term = 5;
    if ((ry == 132) && (m == 4))
      term = 5;
    if ((ry == 194) && (m == 6))
      term = 6;
    return term;
  }

  public static int principleTerm(int y, int m) {
    if (y < 1901 || y > 2100)
      return 0;
    int index = 0;
    int ry = y - baseYear + 1;
    while (ry >= principleTermYear[m - 1][index])
      index++;
    int term = principleTermMap[m - 1][4 * index + ry % 4];
    if ((ry == 171) && (m == 3))
      term = 21;
    if ((ry == 181) && (m == 5))
      term = 21;
    return term;
  }

  @Override
  public String toString() {
    StringBuffer buf = new StringBuffer();
    buf.append("Gregorian Year: " + gregorianYear + "\n");
    buf.append("Gregorian Month: " + gregorianMonth + "\n");
    buf.append("Gregorian Date: " + gregorianDate + "\n");
    buf.append("Is Leap Year: " + isGregorianLeap + "\n");
    buf.append("Day of Year: " + dayOfYear + "\n");
    buf.append("Day of Week: " + dayOfWeek + "\n");
    buf.append("Chinese Year: " + chineseYear + "\n");
    buf.append("Heavenly Stem: " + ((chineseYear - 1) % 10) + "\n");
    buf.append("Earthly Branch: " + ((chineseYear - 1) % 12) + "\n");
    buf.append("Chinese Month: " + chineseMonth + "\n");
    buf.append("Chinese Date: " + chineseDate + "\n");
    buf.append("Sectional Term: " + sectionalTerm + "\n");
    buf.append("Principle Term: " + principleTerm + "\n");
    return buf.toString();
  }

  public String[] getYearTable() {
    setGregorian(gregorianYear, 1, 1);
    computeChineseFields();
    computeSolarTerms();
    String[] table = new String[58]; // 6*9 + 4
    table[0] = getTextLine(27, "公历年历：" + gregorianYear);
    table[1] = getTextLine(27, "农历年历：" + (chineseYear + 1) + " ("
        + stemNames[(chineseYear + 1 - 1) % 10]
        + branchNames[(chineseYear + 1 - 1) % 12] + " - "
        + animalNames[(chineseYear + 1 - 1) % 12] + "年)");
    int ln = 2;
    String blank = "                                         " + "  "
        + "                                         ";
    String[] mLeft = null;
    String[] mRight = null;
    for (int i = 1; i <= 6; i++) {
      table[ln] = blank;
      ln++;
      mLeft = getMonthTable();
      mRight = getMonthTable();
      for (int j = 0; j < mLeft.length; j++) {
        String line = mLeft[j] + "  " + mRight[j];
        table[ln] = line;
        ln++;
      }
    }
    table[ln] = blank;
    ln++;
    table[ln] = getTextLine(0, "##/## - 公历日期/农历日期，(*)#月 - (闰)农历月第一天");
    ln++;
    return table;
  }

  public static String getTextLine(int s, String t) {
    String str = "                                         " + "  "
        + "                                         ";
    if (t != null && s < str.length() && s + t.length() < str.length())
      str = str.substring(0, s) + t + str.substring(s + t.length());
    return str;
  }

  private static String[] monthNames = { "一", "二", "三", "四", "五", "六", "七",
      "八", "九", "十", "十一", "十二" };

  public String[] getMonthTable() {
    setGregorian(gregorianYear, gregorianMonth, 1);
    computeChineseFields();
    computeSolarTerms();
    String[] table = new String[8];
    String title = null;
    if (gregorianMonth < 11)
      title = "                   ";
    else
      title = "                 ";
    title = title + monthNames[gregorianMonth - 1] + "月"
        + "                   ";
    String header = "   日    一    二    三    四    五    六 ";
    String blank = "                                          ";
    table[0] = title;
    table[1] = header;
    int wk = 2;
    String line = "";
    for (int i = 1; i < dayOfWeek; i++) {
      line += "     " + ' ';
    }
    int days = daysInGregorianMonth(gregorianYear, gregorianMonth);
    for (int i = gregorianDate; i <= days; i++) {
      line += getDateString() + ' ';
      rollUpOneDay();
      if (dayOfWeek == 1) {
        table[wk] = line;
        line = "";
        wk++;
      }
    }
    for (int i = dayOfWeek; i <= 7; i++) {
      line += "     " + ' ';
    }
    table[wk] = line;
    for (int i = wk + 1; i < table.length; i++) {
      table[i] = blank;
    }
    for (int i = 0; i < table.length; i++) {
      table[i] = table[i].substring(0, table[i].length() - 1);
    }

    return table;
  }

  private static String[] chineseMonthNames = { "正", "二", "三", "四", "五", "六",
      "七", "八", "九", "十", "冬", "腊" };
  private static String[] principleTermNames = { "雨水", "春分", "谷雨", "夏满", "夏至",
      "大暑", "处暑", "秋分", "霜降", "小雪", "冬至", "大寒" };
  private static String[] sectionalTermNames = { "立春", "惊蛰", "清明", "立夏", "芒种",
      "小暑", "立秋", "白露", "寒露", "立冬", "大雪", "小寒" };

  public String getDateString() {
    String str = "*  /  ";
    String gm = String.valueOf(gregorianMonth);
    if (gm.length() == 1)
      gm = ' ' + gm;
    String cm = String.valueOf(Math.abs(chineseMonth));
    if (cm.length() == 1)
      cm = ' ' + cm;
    String gd = String.valueOf(gregorianDate);
    if (gd.length() == 1)
      gd = ' ' + gd;
    String cd = String.valueOf(chineseDate);
    if (cd.length() == 1)
      cd = ' ' + cd;
    if (gregorianDate == sectionalTerm) {
      str = " " + sectionalTermNames[gregorianMonth - 1];
    } else if (gregorianDate == principleTerm) {
      str = " " + principleTermNames[gregorianMonth - 1];
    } else if (chineseDate == 1 && chineseMonth > 0) {
      str = " " + chineseMonthNames[chineseMonth - 1] + "月";
    } else if (chineseDate == 1 && chineseMonth < 0) {
      str = "*" + chineseMonthNames[-chineseMonth - 1] + "月";
    } else {
      str = gd + '/' + cd;
    }
    return str;
  }

  public int rollUpOneDay() {
    dayOfWeek = dayOfWeek % 7 + 1;
    dayOfYear++;
    gregorianDate++;
    int days = daysInGregorianMonth(gregorianYear, gregorianMonth);
    if (gregorianDate > days) {
      gregorianDate = 1;
      gregorianMonth++;
      if (gregorianMonth > 12) {
        gregorianMonth = 1;
        gregorianYear++;
        dayOfYear = 1;
        isGregorianLeap = isGregorianLeapYear(gregorianYear);
      }
      sectionalTerm = sectionalTerm(gregorianYear, gregorianMonth);
      principleTerm = principleTerm(gregorianYear, gregorianMonth);
    }
    chineseDate++;
    days = daysInChineseMonth(chineseYear, chineseMonth);
    if (chineseDate > days) {
      chineseDate = 1;
      chineseMonth = nextChineseMonth(chineseYear, chineseMonth);
      if (chineseMonth == 1)
        chineseYear++;
    }
    return 0;
  }

  public int getGregorianYear() {
    return gregorianYear;
  }

  public void setGregorianYear(int gregorianYear) {
    this.gregorianYear = gregorianYear;
  }

  public int getGregorianMonth() {
    return gregorianMonth;
  }

  public void setGregorianMonth(int gregorianMonth) {
    this.gregorianMonth = gregorianMonth;
  }

  public int getGregorianDate() {
    return gregorianDate;
  }

  public void setGregorianDate(int gregorianDate) {
    this.gregorianDate = gregorianDate;
  }

  public boolean isGregorianLeap() {
    return isGregorianLeap;
  }

  public void setGregorianLeap(boolean isGregorianLeap) {
    this.isGregorianLeap = isGregorianLeap;
  }

  public int getDayOfYear() {
    return dayOfYear;
  }

  public void setDayOfYear(int dayOfYear) {
    this.dayOfYear = dayOfYear;
  }

  public int getDayOfWeek() {
    return dayOfWeek;
  }

  public void setDayOfWeek(int dayOfWeek) {
    this.dayOfWeek = dayOfWeek;
  }

  public int getChineseYear() {
    return chineseYear;
  }

  public void setChineseYear(int chineseYear) {
    this.chineseYear = chineseYear;
  }

  public int getChineseMonth() {
    return chineseMonth;
  }

  public void setChineseMonth(int chineseMonth) {
    this.chineseMonth = chineseMonth;
  }

  public int getChineseDate() {
    return chineseDate;
  }

  public void setChineseDate(int chineseDate) {
    this.chineseDate = chineseDate;
  }

  public int getSectionalTerm() {
    return sectionalTerm;
  }

  public void setSectionalTerm(int sectionalTerm) {
    this.sectionalTerm = sectionalTerm;
  }

  public int getPrincipleTerm() {
    return principleTerm;
  }

  public void setPrincipleTerm(int principleTerm) {
    this.principleTerm = principleTerm;
  }

  public static char[] getDaysInGregorianMonth() {
    return daysInGregorianMonth;
  }

  public static void setDaysInGregorianMonth(char[] daysInGregorianMonth) {
    CalendarUtil.daysInGregorianMonth = daysInGregorianMonth;
  }

  public static String[] getStemNames() {
    return stemNames;
  }

  public static void setStemNames(String[] stemNames) {
    CalendarUtil.stemNames = stemNames;
  }

  public static String[] getBranchNames() {
    return branchNames;
  }

  public static void setBranchNames(String[] branchNames) {
    CalendarUtil.branchNames = branchNames;
  }

  public static String[] getAnimalNames() {
    return animalNames;
  }

  public static void setAnimalNames(String[] animalNames) {
    CalendarUtil.animalNames = animalNames;
  }

  public static char[] getChineseMonths() {
    return chineseMonths;
  }

  public static void setChineseMonths(char[] chineseMonths) {
    CalendarUtil.chineseMonths = chineseMonths;
  }

  public static int getBaseYear() {
    return baseYear;
  }

  public static void setBaseYear(int baseYear) {
    CalendarUtil.baseYear = baseYear;
  }

  public static int getBaseMonth() {
    return baseMonth;
  }

  public static void setBaseMonth(int baseMonth) {
    CalendarUtil.baseMonth = baseMonth;
  }

  public static int getBaseDate() {
    return baseDate;
  }

  public static void setBaseDate(int baseDate) {
    CalendarUtil.baseDate = baseDate;
  }

  public static int getBaseIndex() {
    return baseIndex;
  }

  public static void setBaseIndex(int baseIndex) {
    CalendarUtil.baseIndex = baseIndex;
  }

  public static int getBaseChineseYear() {
    return baseChineseYear;
  }

  public static void setBaseChineseYear(int baseChineseYear) {
    CalendarUtil.baseChineseYear = baseChineseYear;
  }

  public static int getBaseChineseMonth() {
    return baseChineseMonth;
  }

  public static void setBaseChineseMonth(int baseChineseMonth) {
    CalendarUtil.baseChineseMonth = baseChineseMonth;
  }

  public static int getBaseChineseDate() {
    return baseChineseDate;
  }

  public static void setBaseChineseDate(int baseChineseDate) {
    CalendarUtil.baseChineseDate = baseChineseDate;
  }

  public static int[] getBigLeapMonthYears() {
    return bigLeapMonthYears;
  }

  public static void setBigLeapMonthYears(int[] bigLeapMonthYears) {
    CalendarUtil.bigLeapMonthYears = bigLeapMonthYears;
  }

  public static char[][] getSectionalTermMap() {
    return sectionalTermMap;
  }

  public static void setSectionalTermMap(char[][] sectionalTermMap) {
    CalendarUtil.sectionalTermMap = sectionalTermMap;
  }

  public static char[][] getSectionalTermYear() {
    return sectionalTermYear;
  }

  public static void setSectionalTermYear(char[][] sectionalTermYear) {
    CalendarUtil.sectionalTermYear = sectionalTermYear;
  }

  public static char[][] getPrincipleTermMap() {
    return principleTermMap;
  }

  public static void setPrincipleTermMap(char[][] principleTermMap) {
    CalendarUtil.principleTermMap = principleTermMap;
  }

  public static char[][] getPrincipleTermYear() {
    return principleTermYear;
  }

  public static void setPrincipleTermYear(char[][] principleTermYear) {
    CalendarUtil.principleTermYear = principleTermYear;
  }

  public static String[] getMonthNames() {
    return monthNames;
  }

  public static void setMonthNames(String[] monthNames) {
    CalendarUtil.monthNames = monthNames;
  }

  public static String[] getChineseMonthNames() {
    return chineseMonthNames;
  }

  public static void setChineseMonthNames(String[] chineseMonthNames) {
    CalendarUtil.chineseMonthNames = chineseMonthNames;
  }

  public static String[] getPrincipleTermNames() {
    return principleTermNames;
  }

  public static void setPrincipleTermNames(String[] principleTermNames) {
    CalendarUtil.principleTermNames = principleTermNames;
  }

  public static String[] getSectionalTermNames() {
    return sectionalTermNames;
  }

  public static void setSectionalTermNames(String[] sectionalTermNames) {
    CalendarUtil.sectionalTermNames = sectionalTermNames;
  }

  public static void main(String[] arg) {
    CalendarUtil c = new CalendarUtil();
    String cmd = "day";
    int y = 2010;
    int m = 8;
    int d = 11;

    c.setGregorian(y, m, d);
    c.computeChineseFields();
    c.computeSolarTerms();

    if (cmd.equalsIgnoreCase("year")) {
      String[] t = c.getYearTable();
      for (int i = 0; i < t.length; i++)
        System.out.println(t[i]);
    } else if (cmd.equalsIgnoreCase("month")) {
      String[] t = c.getMonthTable();
      for (int i = 0; i < t.length; i++)
        System.out.println(t[i]);
    } else {
      System.out.println(c.toString());
    }
    System.out.println(c.getDateString());

  }

}
